Labconco Paramoun Ductless Enclosures 69636 Series, 6' Widths - Manual (Page 24)

Chapter 4: Performance Features and Safety Precautions
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Smart-Flow™ Airflow Monitor
The Smart-Flow™ Airflow Monitor continuously monitors airflow and
displays face velocity. An audible/visual alarm alerts the user to low airflow
conditions. The Smart-Flow Airflow Monitor enables the motor speed to
automatically adjust for conditions such as temperature, barometric pressure,
and filter loading and maintain constant programmed airflow speed. The
Smart-Flow feedback maintains constant airflow speed through the use of
constant velocity pressure measurement accomplished with a pitot tube and
pressure sensor mounted on the control board. Transport, altitude, and
temperature differences require the airflow re-calibration steps as outlined in
Chapter 5 and 6. Use the “Calibration” menu in Chapter 5 to reset the
“Pressure Sensor” values for “motor speed” and “airflow face velocity.”
Quiet, Energy-Efficient ECM Impeller
The electronically commutated motorized (ECM) impeller is 95% energy
efficient providing “green” energy savings (See Appendix D). Because of
the high efficiency, the impeller runs extremely quiet for the comparative
amount of airflow volume. All Paramounts run at or below 62 dbA at 80 fpm
and most Paramounts run at or below 59 dbA at 80 fpm. By design, the ECM
impeller is located after the filters assuring an intrinsically safe design where
all contaminated air is filtered effectively. See Chapter 2: Prerequisites for
complete airflow exhaust volume, noise pressure, and face velocities of 60,
80 and 100 fpm. The ECM impeller has a programmable blower timer
should you desire additional “green” energy savings.
Audible/Visual Alarms
The audible/visual alarms remind the operator to check the filters with
sampling tubes or replace the filter. Filter replacement alarms occur in
audible/visual modes for both filter saturation activated by the Safety-First
Vapor Sensor or the final filter elapsed time. A low airflow alarm occurs
when the face velocity drops below programmed levels.
Large Control Panel LCD Display
The large (3" x 1.5") LCD message center provides continuous status reports
for each filter, displays airflow speed, and displays alarm messages for both
filters and airflow. The touchpad can be programmed for filter types, filter
check times, and filter replacement times. Audible/visual alert time messages
appear after the specified number of hours has elapsed. The audible/visual
alarm reminds the operator to check the filters with sampling tubes or replace
the filters. Filter replacement audible/visual alarms occur for both the Safety-
First Vapor Sensor and final filter elapsed time.